<html>
   <head>
      <meta charset="UTF-8">
      <title>用户登录</title>
   </head>
   <body>
      <center>
         <h1>用户登录</h1>
         <form action="login" method="post">
            <table border="1">
               <tr>
                  <td>用户名:</td>
                  <td><input type="text" size="30" name="username"></td>
               </tr>
               <tr>
                  <td>密码:</td>
                  <td><input type="password" size="30" name="password"></td>
               </tr>
               <tr>
                  <td colspan="2" align="center"><input type="submit" value="登录"></td>
               </tr>
            </table>
         </form>
      </center>
   </body>
</html>